Application Diagrams
Steady state voltage at the VBUS pin must not be allowed to exceed VVMAX.
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| USB331X |
| Link Controller | |
RVBUSmay be installed in this configuration to |
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| DATA7 | 7 | DATA7 | |||
assist in protecting the VBUS pin. 820 Ohms |
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will protect against VBUS transients up to |
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| DATA6 | DATA6 | |||
8.5V. 10K Ohms will protect against |
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| DATA5 | 9 | DATA5 | ||
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| 10 | |||||
transients up to 10V. | RVBUS |
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| DATA4 | DATA4 | ||
| 2 | VBUS | DATA3 | 12 | DATA3 | ||
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| DATA2 | DATA2 | |||
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| DATA1 | DATA1 | ||
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| 17 | |||
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| DATA0 | DATA0 | ||
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| STP | 20 | STP | ||
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| 18 | ||||
| Supply |
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| NXT | NXT | ||
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| DIR | 19 | DIR | ||
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| 11 | |||
The capacitor CVBUSmust be | 3 | VBAT | CLKOUT | CLKOUT | |||
installed on this side of RVBUS. | RESETB | 22 | RESETB | ||||
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| CBYP |
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| REFCLK | Reference | ||
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| Signal at REFCLK | ||||
USB |
| VDD3.3 |
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CVBUS | COUT |
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| Pin Strap | |||
Receptacle |
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| VIH and VIL | ||||
VBUS | 1 |
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| REFSEL[1] | 14 | Determines | |
| 2 | 5 |
| 15 | REFCLK | ||
DM | DM | REFSEL[0] | frequency | ||||
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DP | 3 | 6 | DP |
| 1.8VSupply | ||
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| NC |
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SHIELD | 1 | ID | VDD18 | 21 |
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GND |
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| RBIAS | 24 | CBYP | |
CDC_BLOCK |
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| 8.06k |
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GNDFLAG
Figure 3 USB3310 QFN Application Diagram (Device)
SMSC USB3310 REV C | PRODUCT7 PREVIEW | Revision 1.11 |